angoumois grain moth
DESCRIPTION
Stored pest. pest for grains.TRANSCRIPT
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Angoumois Grain Mothsitotroga cerealella
H.N.B.R AbeysingheU.W.L.U SampathP.C WerathungeD.K.P. Weerasooriya
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Scientific classification
Phylum - Arthropoda (Arthropods) Class - Insecta (Insects) Order - Lepidoptera (Butterflies and Moths) Superfamily - Gelechioidea Family - Gelechiidae (Twirler Moths) Subfamily - Chelariinae Genus - Sitotroga Species - cerealella
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Life cycle
Adult
Egg
Larva
Pupa
Adult
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Adult
Wing expanse of 13-19 mm and a length of 6-9 mm.
Forewings are clay-yellow and without markings .
The hind wings are grey
Rear edges wings have long fringes
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Eggo The female lays eggs
singly or in clumps on the outside of the cereal grains.
o The number of eggs laid is variable but may total up to 200 during a life of 5-10 days.
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Larva
The larvae bore in to a kernel which they hollow out completely in the course of development
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Pupa
Pupation also takes place inside the kernel. Before pupation, the larva extends the anterior of its chamber to just beneath the surface of the grain, thus forming a small circular window.
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The newly emerged adult pushes through the window of the seed coat leaving a small but characteristic round hole; part of the window often remains at the edge of the hole.
Adult Emergence
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Diets
The adults' moth feed on honey ,water etc.
larvae feed on grains.
They bore into the seeds of the host plant and feed inside the seed covering.
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Damage
A primary pest of grain, which may be
attacked in the field,
Most damage occurs in storage.
Attacks all types of cereal grains.
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Harvesting and drying
Grain moisture content (12-14%)
Minimize cracked and broken grain during processing
Don’t mix old and new grain
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Cleaning And Disinfesting The Storage System
By sanitation or hygiene Use of monitoring devices May need to treat with insecticide
Malathion (50EC) at 5ml/20l of water @20ml/m2,
Fenitrothion (50EC) at 5ml/l water @20ml/m2,
Deltamethrin (2.5% WP) at 1.5g/l water @20ml/m2
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Treat Infected Grain
Grain treatmentInsecticide-
malathionFumigation
phosphine, carbon dioxide
PhysicalHeat
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